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DeutschAllium douglasii
| Douglas' Onion | |
|---|---|
 | |
| Allium douglasii in Lincoln County, Washington, US | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Amaryllidaceae |
| Subfamily: | Allioideae |
| Genus: | Allium |
| Species: | A. douglasii |
| Binomial name | |
| Allium douglasii Hook. | |
| Synonyms[2] | |
Allium douglasii, the Douglas' onion, is a perennial herbaceous flowering plant in the Amaryllidaceae family. It is native to northeastern Oregon, eastern Washington, and northern Idaho.
Description
[edit]Allium douglasii is a perennial herbaceous flowering plant that produces egg-shaped bulbs up to 3 cm (1+1⁄4 in) long. Scapes are round in cross-section, up to 40 cm (16 in) tall. Flowers are up to 10 mm (3⁄8 in) across; tepals pink or purple with green midribs; anthers blue; pollen white or light gray.[3][4][5][6] Two grooved leaves usually remain during the flowering stage.[7]
Distribution and habitat
[edit]Allium douglasii is endemic to sections of the Northwestern United States (northeastern Oregon, Idaho, eastern Washington). It typically grows in shallow soils at elevations of 400–1,300 m (1,300–4,300 ft) above sea level.[3][8]
Conservation
[edit]As of December 2024[update], the conservation group NatureServe listed Allium douglasii as Apparently Secure (G4) worldwide. This status was last reviewed on 7 August 1984. At the state level, this species is listed as No Status Rank (not assessed) in Idaho and Oregon, and as Secure (G5) in Washington.[1]
Taxonomy
[edit]Allium douglasii was first named and described by William Jackson Hooker in 1838 in the Flora Boreali-Americana publication
Etymology
[edit]The specific epithet, douglasii, is named in honour of scottish botanist David Douglas. In English, this species is commonly known as Douglas' Onion.[9]
References
[edit]- ^ a b NatureServe (6 December 2024). "Allium douglasii | NatureServe Explorer". NatureServe Explorer. Arlington, Virginia. Retrieved 22 December 2024.
- ^ "Allium douglasii Hook. | Plants of the World Online | Kew Science". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 22 December 2024.
- ^ a b Flora of North America Editorial Committee (ed.). "Allium douglasii". Flora of North America North of Mexico (FNA). New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
- ^ Hooker, William Jackson. 1839. Flora Boreali-Americana 2: 184, pl. 197
- ^ Robinson, Benjamin Lincoln, & Seaton, Henry Eliason. 1893. Botanical Gazette 18(6): 237–238.
- ^ Hitchcock, C. H., A.J. Cronquist, F. M. Ownbey & J. W. Thompson. 1969. Vascular Cryptogams, Gymnosperms, and Monocotyledons. 1: 1–914. In C. L. Hitchcock, Vascular Plants of the Pacific Northwest. University of Washington Press, Seattle.
- ^ Taylor, Ronald J. (1994) [1992]. Sagebrush Country: A Wildflower Sanctuary (rev. ed.). Missoula, MT: Mountain Press Pub. Co. p. 76. ISBN 0-87842-280-3. OCLC 25708726.
- ^ "Allium douglasii". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
- ^ "USDA Plants Database". plants.usda.gov. Retrieved 2024-12-22.
